F_VN_DecomposeAffineTransformation
Decompose an affine transformation matrix and return the rotation angle (clockwise) in radian. The decomposition method assumes the following order of transformation: Translation, Rotation, Scale, and Skew.
Syntax
Definition:
FUNCTION F_VN_DecomposeAffineTransformation : HRESULT
VAR_IN_OUT
aAffineTransform : TcVnMatrix2x3_LREAL;
fRotationAngle : LREAL;
END_VAR
VAR_INPUT
hrPrev : HRESULT;
END_VAR
Inputs
|
Name |
Type |
Description |
|---|---|---|
|
hrPrev |
HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.) |
In/Outputs
|
Name |
Type |
Description |
|---|---|---|
|
aAffineTransform |
Affine transformation matrix | |
|
fRotationAngle |
LREAL |
Rotation angle (radian) in the clockwise direction. The rotation center is the origin point (0,0) |
Return valueRequired License
TC3 Vision Base
System Requirements
Development environment | Target platform | PLC libraries to include |
|---|---|---|
TwinCAT V3.1. 4024.44 or later | PC or CX (x64) with PL50, e.g. Intel 4-core Atom CPU | Tc3_Vision |